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. 2021 Feb 18;10(2):388. doi: 10.3390/plants10020388

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Effect of salinity (S) and foliar application of chitosan dissolved in different organic acids (Ch ACE, Ch ASC, Ch CIT and Ch MAL) and their interactions on (A) Peroxidase (POD) activity, (B) Polyphenol oxidase (PPO) activity, (C) Superoxide dismutase (SOD) activity and (D) Catalase (CAT) activity of tomato plants. Data are presented as means ± SE (n = 3). Data followed by different letters are significantly different following Tukey’s honestly significant difference (HSD) test at p ≤ 0.05. FW: fresh weight.